<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="分类名称" prop="catName">
        <el-input
          v-model="queryParams.catName"
          placeholder="请输入分类名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="分类层级" prop="catLevel">
        <el-input
          v-model="queryParams.catLevel"
          placeholder="请输入分类层级"
          clearable
          type="number"
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <!-- <el-form-item label="分类下的书籍数量" prop="bookCount">
        <el-input
          v-model="queryParams.bookCount"
          placeholder="请输入分类下的书籍数量"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item> -->
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['product:category:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['product:category:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['product:category:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="info"
          plain
          icon="el-icon-sort"
          size="mini"
          @click="toggleExpandAll"
        >展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table 
      v-if="refreshTable"
      v-loading="loading" 
      :data="categoryList" 
      @selection-change="handleSelectionChange"
      row-key="id"
      :default-expand-all="isExpandAll"
      :tree-props="{children: 'children', hasChildren: 'hasChildren'}"
    >
      <el-table-column type="selection" width="50" align="center" />
      <el-table-column label="分类名称" prop="catName" />
      <!-- <el-table-column label="父分类" align="center" prop="parentCid" /> -->
      <el-table-column label="分类层级" align="center" prop="catLevel">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.category_level" :value="scope.row.catLevel"/>
        </template>
      </el-table-column>
      <el-table-column label="书籍数量" align="center" prop="bookCount" />
      <el-table-column label="排序" align="center" prop="sort" />
      <el-table-column label="启用状态" align="center">
        <template slot-scope="scope">
          <el-switch v-if="scope.row.id != '0'"
            v-model="scope.row.status"
            active-value="0"
            inactive-value="1"
            @change="handleStatusChange(scope.row)"
          ></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="分类图标" align="center" prop="icon" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button v-if="scope.row.id != '0'"
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['product:category:edit']"
          >修改</el-button>
          <el-button v-if="scope.row.id != '0'"
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['product:category:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改书籍分类对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="分类名称" prop="catName">
          <el-input @keyup.enter.native="submitForm" v-model="form.catName" placeholder="请输入分类名称" />
        </el-form-item>
        <el-form-item label="父分类" prop="parentCid">
          <el-cascader v-model="form.parentCid" placeholder="请选择父分类"
          :options="categoryList" :props="defaultProps" filterable clearable />
        </el-form-item>
        <el-form-item label="排序" prop="sort">
          <el-input @keyup.enter.native="submitForm"  v-model="form.sort" type="number" placeholder="请输入排序" />
        </el-form-item>
        <el-form-item label="分类图标" prop="icon">
          <el-input v-model="form.icon" placeholder="请输入分类图标" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCategory, getCategory, delCategory, addCategory, updateCategory, changeCategoryStatus, listCategoryWithTree } from "@/api/product/category";

export default {
  name: "Category",
  dicts: ['category_level'],
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 书籍分类表格数据
      categoryList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        catName: null,
        parentCid: null,
        catLevel: null,
        bookCount: null,
        sort: null,
        status: null,
        icon: null
      },
      // 重新渲染表格状态
      refreshTable: true,
      // 是否展开
      isExpandAll: false,
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        catName: [
          { required: true, message: "书本名称不能为空", trigger: "blur" }
        ],
        sort: [
          // { required: true, message: "排序不能为空", trigger: "blur" },
          { pattern: /^([0-9]*)$/, message: "只能输入正整数", trigger: "blur" }
        ]
      },
      // 树形结构规则
      defaultProps: {
        value: "id",
        label: "catName",
        children: "children",
        expandTrigger: "true",
        checkStrictly: "true"
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询书籍分类列表 */
    getList() {
      this.loading = true;
      // listCategory(this.queryParams).then(response => {
      //   // console.log(response);
      //   this.categoryList = response.data.list;
      //   this.total = response.data.totalCount;
      //   this.loading = false;
      // });
      console.log(this.queryParams);
      // 获取树形结构列表
      listCategoryWithTree(this.queryParams).then(response => {
        this.categoryList = response.data;
        this.categoryList.push({id:"0",catName:"无",catLevel:0,status:"0"})
        // console.log(response);
        this.loading = false;
      })
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        catName: null,
        parentCid: null,
        catLevel: null,
        bookCount: null,
        sort: null,
        status: "0",
        icon: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加书籍分类";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids;
      
      getCategory(id).then(response => {
        this.form = response.data;
        console.log(this.form);
        this.open = true;
        this.title = "修改书籍分类";
      });
      
    },
    /** 提交按钮 */
    submitForm() {
      let fpc = this.form.parentCid;
      if(fpc != null && this.form.id == null){
        this.form.parentCid = fpc[fpc.length-1];
      } 
      else if(fpc != null && fpc[0].length > 1){
        this.form.parentCid = fpc[fpc.length-1];
      }

      console.log(this.form);
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateCategory(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCategory(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除书籍分类编号为"' + ids + '"的数据项？').then(function() {
        return delCategory(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    // 书籍上架状态修改
    handleStatusChange(row) {
      let text = row.status === "0" ? "启用" : "停用";
      this.$modal.confirm('确认要 "' + text + '" 类别 "' + row.catName + '" 吗？').then(function() {
        return changeCategoryStatus(row.id, row.status);
      }).then(() => {
        this.$modal.msgSuccess(text + "成功");
      }).catch(function() {
        row.status = row.status === "0" ? "1" : "0";
      });
    },
    /** 展开/折叠操作 */
    toggleExpandAll(row) {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
  }
};
</script>
